MESON Chess Problem Database

Problem Display
PID: 220401 (K7/Q7/8/8/3B4/8/1p1kB3/2N1b3 w - - 0 1)

Torngren, O

Torngren, Pehr Hendrik

Die Schwalbe, 1928

K7/Q7/8/8/3B4/8/1p1kB3/2N1b3

#2

5 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Be3+?
      • 1...Kc3
        • 2.Qc5#
      • 1...Kc2!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qxb2#
        • 2.Qc3#
      • 1...Kxc1
        • 2.Qxb2#
      • 1...Kc2
        • 2.Qxb2#
      • 1...bxc1Q
        • 2.Qd3#
      • 1...bxc1S
        • 2.Qb2#
      • 1...bxc1B
        • 2.Qd3#
      • 1...bxc1R
        • 2.Qd3#
      • 1...Bf2
        • 2.Qc3#
      • 1...Bg3
        • 2.Qc3#
      • 1...Bh4
        • 2.Qc3#
      • 1...b1Q
        • 2.Qc3#
      • 1...b1S
        • 2.Qb2#
      • 1...b1B
        • 2.Qc3#
      • 1...b1R
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(D)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT,XS(A)::QAB1(D),XP(b)
      • K(c);P-FLIGHT::QAR1(D),XP(b)
      • P(b);SBLOCK,XS(A)::QAR1(D)
      • P(b);XS(A)::QAR2(D)
      • B(a);::QAB1(D)
      • P(b);::QAB1(D)
      • P(b);::QAR2(D)
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